I'm starting to look into extending my visit as we have applied for spousal sponsorship and i want to stay in Canada with my wife while it is being processed. In the required documents section it says that I need to submit proof of a medical? Is this correct for a visa exempt extension? I did an upfront medical for my PR application but that got sent in with the application so i no longer have the proof of medical. All I have is receipt showing that I paid for one.